I believe this is related to the peculiar dual (nvidia) card setup of the MBP circa 2010. I have a 9400m and a 9600m, meant for “power-saving mode” and “performance mode” on Mac OS X.
I’m not sure how testing works with your developers, but I could test binaries / whatever on my hardware.
Not sure how to make an attachment in the Create Topic form…
Here’s bug-report in the meanwhile: http://ge.tt/2qDR0Fo/v/0